Questions about monitoring server hardware and software performance, or network performance.

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2
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1answer
207 views

How Long Should Data Collection Sets run in Windows Server Performance Montioring

I currently have an application server and a database server both running on Windows Server 2008 R2. I have been tasked with generating a weekly report on the utilization of CPU, Memory and Disk. I am ...
0
votes
1answer
683 views

High CPU load caused by slow disks?

We are running a online application on a 3-year old server (quadcore Xeon, 4GB RAM, SAN-disks). The server hosts besides the web application a SQL-, FTP-, SFTP, SMTP, and POP-services. Over the years ...
0
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0answers
46 views

top output seems fine, yet server is overloaded

This server I am benchmarking gives no obvious signs of getting overloaded at a first glance. top output: top - 22:48:25 up 5 days, 3:41, 3 users, load average: 3.19, 3.34, 3.25 Tasks: 146 total, ...
3
votes
1answer
2k views

How to monitor NFS load from userland?

Apologies if I'm not using the proper jargon (although I'm a longtime linux user, I'm not an admin) or if this is a FAQ (though searching SE got lots of hits, I didn't see anything quite like this ...
1
vote
0answers
156 views

Why does Process Explorer cause highly targeted failure of some applications / basic UI functions in a high-power EC2 Windows instance?

Update: I have determined that Process Explorer itself - the program I am using to debug a performance issue - seems to be the cause of the issue. See note, with updated question, at end. I am ...
2
votes
1answer
600 views

Changing time intervals for vSphere performance monitoring, and is there a better way?

I have a set of experiments running on a cluster node which is running ESXi 5.1, and I want to monitor the resource consumption on the node itself. Specifically, I am currently running experiments on ...
3
votes
2answers
1k views

how does NewRelic work by simply installing .Net agent?

Yesterday, I decided to give NewRelic a try. I signed up for a free account, and installed the .Net agent, and restarted IIS as instructed. Immediately, this agent started showing up a wealth of ...
0
votes
1answer
603 views

performance monitor in iis 7 to monitor which website is using most resources (asp.net)

I am using Windows Server 2008 R2 and IIS 7.5, and am hosting multiple websites on the same webserver. Is it possible to use Performance Monitor to know on average which website is using the most ...
0
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1answer
162 views

Monitoring performance metrics from Xen (xend) with Java

I need to write a Java application that is collecting and monitoring (remotely and local) performance informations and metrics from a Xen hypervisor. This Java application should fetch the same ...
0
votes
1answer
662 views

Why is $request_time sometimes much bigger than $upstream_response_time?

I have an HTTPS website where sometimes, for the same clients, the $request_time is 10x the $upstream_response_time, or even 100x. I understand the different between the 2 times: $request_time is the ...
0
votes
1answer
99 views

Windows: Determine number of cores from a performance monitor file?

Is there any way to determine how many cores a particular machine's CPU has based on a Performance Monitor file I have? Additionally, can we see if hyperthreading is enabled? For a period of high ...
0
votes
1answer
402 views

SBS Server 2008 with periodic lsass.exe using 100% of 1 Core

SBS Server 2008 with everything running on it (AD/PDC, SQL 2012, FileServer, RDP Gateway, WSUS, No Exchange though). Every 30 minutes on the hour and half hour, lsass.exe uses 25% of the CPU (1 core ...
2
votes
1answer
227 views

Automating a collection of Perfmon counters

I have a specific setup I'm investigating to solve a specific need we have: I have a lab that consists of 3 machines, which runs load tests and oversees other investigations as needed. During the ...
1
vote
1answer
266 views

How to collect the performance data of a server during an unreachable/down period using Nagios?

Some time services and host stop responding due to a poor server performance. I mean, if for some reason (could be lot of concurrency services access, a expensive backup execution on the server or ...
0
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0answers
33 views

Get Value of SMEM using PHP

I'm using smem command to know how much RAM each user is using. It also display the Count column. As far as my knowledge is concerned, Count column is a value PHP-FPM pm.start_servers and PHP-FPM ...
1
vote
0answers
67 views

IIS httpTracing setting has no effect

I'm trying to troubleshoot some performance issues we are having on a specific ASP.NET page with Microsoft's Perfecto Tool on IIS 7.5. Perfecto uses the ETW hooks build in to IIS to report on specific ...
4
votes
1answer
546 views

ZFS ARC size vs target size

I am trying to understand the inner workings of the ZFS ARC. However, I am confused with several things: actual (zfs:0:arcstats:size) vs target size (zfs:0:arcstats:c). I understand that actual size ...
0
votes
1answer
49 views

How can I monitor what are the most frequently accessed URL's on my servers? [closed]

What enterprise software can I use to monitor the most frequently accessed URL's on my servers? I'm familiar with load testing software, but need something that can monitor real loads. Also, software ...
2
votes
2answers
33 views

How can I set the Interval of a performance protocol under 1 second with Windows Server 2003?

I want to determine the utilization of the NICs of our server, while very small videos are transferred. The smallest interval which I can set in Performance Monitor is a second. Unfortunately, I ...
10
votes
3answers
4k views

Determining VM doing I/O on a Hyper-V host

How do I find out which VM is responsible for the majority of the I/O I see with Hyper-V? The situation: I do have Hyper-V hosts with a number of VMs (around 30 per host) where I occasionally see ...
2
votes
1answer
375 views

What is the (*) in Windows Performance Counters

Take the following counter for example: \LogicalDisk(*)\% Free Space Where can I find what can be plugged in place of the *? I know sometimes it's _global_ and other times it can be _total_. I ...
4
votes
2answers
165 views

Hyper-V Performance Monitoring

Background I am very new to the world of server-based virtualization (I've been running VM's on my desktops for years). The organization I work for has recently purchased a Dell server that will be ...
0
votes
1answer
498 views

which performance counters mainly matter for windows server performance?

We have a website which is sometimes performing slowly, and / or completely hangs. I have setted up temporarily the default system performance data collector in Performance Monitor, to see if this ...
0
votes
1answer
60 views

Linux user permissions setup for monitoring tool

We have external monitoring tool which will access our linux machines through SSH and will read top/ping/netstat/disk activity. As i am creating separated ssh key and separated user for this purpose i ...
0
votes
0answers
90 views

Live access logging for many nginx websites

I'm running a couple of dozen sites on a server for a client. This number moves around pretty fluidly as they test ideas and we have a flexible configuration to host things. The problem comes in that ...
0
votes
1answer
33 views

Before buying it, how can I tell if a storage array makes certain performance counters available over SNMP?

I've noticed that documentation for SNMP reporting that is built-in to devices (i.e. doesn't need an agent running in an OS) usually doesn't include a list of performance counters that are available ...
1
vote
1answer
2k views

Active Sessions Performance Counter for Web Server

I would like to monitor the number of active sessions for my ASP.Net 4.0. It is hosted on IIS7 Windows 2008 Server. When I looked at the Performance counter, I saw many instances. How could I know ...
0
votes
1answer
25 views

How to customize Windows “Performance Monitor”?

I'm wondering if that's possible to set a customized action counter that is not listed as one of the counters? e.g. a batch script that measure a time for running my application, and then notify the ...
1
vote
1answer
171 views

How to graph the web server load by using the nginx logs with response time?

I want to analyse if certain type of requests do have an important impact on the server. My backend service is behind nginx which logs all requests including the time needed to get the response. Now ...
1
vote
1answer
159 views

Any way to get munin plugin output to dstat?

The two tools are great with plugins and many available out of the box metrics. I was wondering if there is a way to get output of munin into dstat or a similar tool (real time output vs munin's ...
1
vote
1answer
2k views

In Windows 7, why can't I use perfmon against a remote server?

I am on Windows 7 and trying to run perfmon against Windows 2003 and Windows 2008 servers. I am running into the same issue with all remote machines. When creating a data collector set, I specify a ...
-5
votes
2answers
88 views

How can I test my server response time? [closed]

I'd like to test my server response time and how fast my website loads. How can I do it?
0
votes
1answer
135 views

Server processes stall for a few seconds, how can we find the issue?

We have a fairly large VPS running our custom server code (not web servers but game servers), at random times the server seems to stall for a few seconds, how can we track the down the thread / ...
0
votes
1answer
78 views

How can I replicate performance counter setups in an Azure WorkerRole?

I am trying to collect performance statistics on our Azure application. Up till now, our process has been to set up the roles with RDP enabled, connect, manually set up the performance counters, log ...
-1
votes
2answers
59 views

server busy threshold? [closed]

i have a server with 512MB RAM running mysql and apache service. I have joomla site inside my server. I want to ask, is there a brief threshold limit of RAM when the server will be stated as busy? ...
1
vote
1answer
394 views

Guide to Apache performance monitoring and capacity planning? [closed]

Can someone point me at a guide on performance monitoring and capacity management of an Apache web farm? Other questions suggest some tools, but I'm also interested in understanding what the various ...
0
votes
2answers
1k views

Perfmon counters for monitoring general IIS/MSSQL server activity

I have a virtual server with a hosting company so CPU and RAM are limited. I need to watch load/performance over time to know when to upgrade the server. The site runs multiple ASP.NET apps as well ...
0
votes
0answers
194 views

Top shows md127_raid1 with high CPU load?

I have a new server, when I use "top" to see busy processes I usually see md127_raid1 either at the top or close to the top What is this process doing? How can I easily verify that the raid is ...
0
votes
1answer
343 views

View the performance counters I have added to a Data Collector set after creation on Windows Server 2008 R2

I have been working on creating a Data Collector Set to use to collect relevant performance information for an application my team is developing. I am using Performance Monitor on a Windows 2008 R2 ...
2
votes
1answer
1k views

Using Perfmon on Windows Server 2008 R2 Which counter value should be used for physical memory usage?

I am attempting to use Performance Monitor to set up a relevant User Defined Dataset on a Windows 2008 R2 Server. This is to track the performance costs incurred by an application that my team is ...
1
vote
2answers
861 views

How does CPU consumption look like from a VM on a heavily use VM Host?

I know I could test this, but I don't have the time right now to setup pristine test conditions to learn something that should be in documented form - and that I cannot find in an authoritative form. ...
0
votes
1answer
2k views

How to tell a Performance Monitor Data Collector Set to regularly generate Reports?

In a nutshell, my goal is to do a long-time recording of several performance counters. My steps I took until now were: Some days ago I've created several user-defined Data Collector Sets in Windows ...
2
votes
3answers
258 views

How do I determine the number of seeks performed on Linux?

I have two programs that write to my servers disk. One I wrote, it does linear writes, it's writing data quickly. Another I'm benchmarking, it's writing data at a 3rd of the speed. It doesn't do much ...
0
votes
1answer
230 views

ASP.NET Applications WMI class not found

I'm trying to instrument ASP.NET cache behavior on a web cluster by accessing the counters in the WMI class, Win32_PerfFormattedData_ASPNET_ASPNETApplications. 2 of my servers have this class, but 1 ...
0
votes
1answer
403 views

High response time with pingdom

I have a server hosted at my end, I am monitoring the server with pingdom and also my router. Strange thing is the response time towards the router is fine, but when the traffic flows towards the ...
10
votes
2answers
987 views

What's difference between monitoring, tracing and profiling?

I have seen these three words showing up a lot, but don't understand the exact differences between them. For example, collecting CPU utilisation is often called profiling and can also fall into ...
0
votes
2answers
629 views

save Performance Monitor settings

I have added several counters to Window 2008 Performance Monitor to monitor web application. When I restart server or close Server Manager console I loose all added monitor. I do not see a way to save ...
1
vote
1answer
483 views

Debugging I/O issues on a linux server

What are some ways to debug I/O issues on a linux server? I've been using: # nohup top -b -d 10 > /var/log/top.log & # nohup iotop -b -d 5 -o -t > /var/log/iotop.log & PS: hardware ...
1
vote
2answers
459 views

Live monitoring on web server logs by tailing the webserver access log

I am looking for a way to find who causes high load on my nginx web server but I do have too many requests per minutes to figure it out which one is the real cause. I want a solution that would work ...
2
votes
3answers
5k views

Network bandwidth usage per process Windows Server 2003

Is there freely available analog from Microsoft to monitor network bandwidth usage per process on Windows Server 2003 as this is implemented with Resource Monitor on W2k8? What I need to know is how ...